Answer:
Option D: provides an alternative reaction mechanism with a lower activation energy
Explanation:
Sometimes, chemical reaction takes place at quite a high temperature and pressure and thus the rate will be very slow. Now, when this happens, we need to make use of a chemical compound known as a catalyst in order to help in lowering the reaction conditions. This will in turn increase the rate of reaction. The catalyst does not alter the chemical combination of the reactants of the reaction but is just used to accelerate the rate of the reaction.
Therefore, at constant temperature, addition of a catalyst to a chemical reaction would provide an alternative reaction mechanism with a lower activation energy.
Answer:
3.4225 * 10^-8
Explanation:
This is just another way to write a number in scientific notation.
Answer:
Lactic acid is used to prepare medicine. It is colorless, can be solid or liquid form.
Explanation:
Acids are sour in taste. It changes the color and taste of the chemical. It reacts with some chemicals metals and produce the hydrogen. It react with hydrogen. I also react with the bases and produce the salt. It also promotes some of the chemical reaction. For example nitric acid, phosphoric acid sulfuric acid and the organic acids.
The lactic acid is soluble with ethanol and water. It is produced by the reaction of two strategies, the synthetic method and biotechnological methods. It is produced at very large scale by the help of fermentation. Lactic acid is colorless, in liquid or solid form. It is a weak acid and can react in the way as the stronger acids react.
Answer:
- <em>The solution expected to contain the greatest number of solute particles is: </em><u>A) 1 L of 1.0 M NaCl</u>
Explanation:
The number of particles is calculated as:
a) <u>For Ionic compounds</u>:
- molarity × volume in liters × number of ions per unit formula.
b) <u>For covalent compounds</u>:
- molarity × volume in liters
The difference is a factor which is the number of particles resulting from the dissociation or ionization of one mole of the ionic compound.
So, calling M the molarity, you can write:
- # of particles = M × liters × factor
This table show the calculations for the four solutions from the list of choices:
Compound kind Particles in solution Molarity # of particles
(dissociation) (M) in 1 liter
A) NaCl ionic ions Na⁺ and Cl⁻ 1.0 1.0 × 1 × 2 = 2
B) NaCl ionic ions Na⁺ anc Cl⁻ 0.5 0.5 × 1 × 2 = 1
C) Glucose covalent molecules 0.5 0.5 × 1 × 1 = 0.5
D) Glucose covalent molecules 1.0 1.0 × 1 × 1 = 1
Therefore, the rank in increasing number of particles is for the list of solutions given is: C < B = D < A, which means that the solution expected to contain the greatest number of solute particles is the solution A) 1 L of 1.0 M NaCl.
Balanced equation:
<span>2 NH</span>₄<span>OH + 1 H</span>₂<span>SO</span>₄<span> = 1 (NH</span>₄<span>)</span>₂<span>SO</span>₄<span> + 2 H</span>₂<span>O
</span>
hope this helps!